CN101710788A - Method for upgrading voltage of low-voltage power boost energy saving and power transformation and distribution circuit - Google Patents
Method for upgrading voltage of low-voltage power boost energy saving and power transformation and distribution circuit Download PDFInfo
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- CN101710788A CN101710788A CN200910251300A CN200910251300A CN101710788A CN 101710788 A CN101710788 A CN 101710788A CN 200910251300 A CN200910251300 A CN 200910251300A CN 200910251300 A CN200910251300 A CN 200910251300A CN 101710788 A CN101710788 A CN 101710788A
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Abstract
The invention discloses a method for upgrading voltage of a low-voltage power boost energy saving and power transformation and distribution circuit, which comprises the steps of: connecting a motor outlet wire into a star shape (Y) which can bear voltage of V3*380 V; and changing the wiring of a transformer so as to enable the output voltage of the transformer to be V3*380V. The invention saves two third energy of circuit loss, reduces the circuit voltage loss and thus ensures the quality of power supply voltage.
Description
Technical field
The present invention relates to a kind of method of voltage uprating, especially a kind of is that the low-voltage-powered system that drags boosts energy-conservation and becomes the voltage uprating method of distribution line with Y series energy-saving motor.
Background technology
As low-voltage-powered old type tube j, j0, j02, j03 ... motor Deng highly energy-consuming is eliminated already, and new model Y series motor has occupied dominant position.Y series motor egress line has 6 terminals, adopts angle (△) shape wiring can bear 380V voltage (referring to Fig. 1).Become in the distribution line, electric power system mainly contains two kinds of forms, and a kind of is the transformer of 10 (6)/0.4KV, generally all is that Y/Y continues, its structure form be low-voltage side coil interior, and high-tension coil is outside; Another kind is the 66/6K system, and by the user of 6/0.4KV for Y series motor, the transformer of 66/6KV continues for Y/ △ again.Two kinds of power supply forms all provide 380V voltage to power consumption equipment.Increase line loss, caused the energy that waste is arranged.
Summary of the invention
The object of the present invention is to provide a kind of low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting, by changing motor outlet wiring and transformer connection, low-voltage-powered supply power voltage is boosted by 380V be √ 3*380V, so that reduce line loss.
The object of the present invention is achieved like this: a kind of low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting, it is characterized in that the motor egress line is connected into star (Y) type, can bear √ 3*380V voltage, simultaneously with transformer reconfiguration line, the output voltage that makes transformer is √ 3*380V.
To circuit is that the line voltage distribution of 10 (6) KV power supply is constant, only changes the wiring of the transformer of 10 (6) KV/0.4KV.The transformer of 10 (6)/0.4KV generally all is that Y/Y continues, its structure form be low-voltage side coil interior, and high-tension coil is outside, helps changing pressure.High-tension coil is changed into △ by Y, promptly make △/Y splice into, so just can obtain the voltage of secondary side √ 3*380V, use the receiving voltage that changes Y for Y series motor into.
For electric power system is the 66/6K system, again by the user of 6/0.4KV for Y series motor.Can be constant at the 66KV receiving voltage, its transformer connection can not changed middle transformer under the situation of the transformer insulated permission of next grade, just can obtain the voltage of √ 3*380V.The transformer of 66/6KV changes △/△ into for Y/ △ continues and continues, and then 6KV voltage just is upgraded to the 10KV level, like this through former transformation Y/Y continue become 10/ √ 3*0.4KV like this will be with the required voltage of realizing that Y series motor △ changes.
The present invention compared with prior art has following beneficial effect:
(1) saved 2/3 energy of line loss.Too big with regard to the low-voltage-powered quantity in the whole nation.Saves energy, the saves energy of boosting not second to high voltage power transmission.
(2) reduce the line voltage distribution loss, thereby guaranteed the quality of supply power voltage.
(3), can increase the power supply nargin of circuit if former low-voltage circuit is constant.
When (4) newly designing low-voltage circuit, can dwindle sectional area of wire, save non-ferrous metal.
(5) transformer reconfiguration line makes it to become, the distribution circuit electric voltage upgrading, mainly is in order to realize that low-voltage-powered boosting is purpose, and itself also has effect of saving energy.
Description of drawings
Fig. 1 is the former connection layout of Y series energy-saving motor and the schematic diagram of principle;
Fig. 2 is the schematic diagram that changes connection layout and principle of Y series energy-saving motor;
Fig. 3 is the supply power voltage that does not change 10 (6) KV, only changes the principle schematic of depressor wiring;
Fig. 4 is the principle schematic that 66/6 → 6/0.4KV changes √ 3*0.4KV into.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
(1) low-voltage-powered boost energy-conservation
Old type tube j, j0, j02, j03 ... motor Deng highly energy-consuming is eliminated already, and new model Y series motor has occupied dominant position.Low-voltage-powered system energy-conservation necessary and sufficient condition that provides of boosting just is provided for this.
Low-voltage-poweredly boost energy-conservationly, being one has the big conservation measures of investment return.It does not need moving what major operation, and only changing Y series motor once, connected mode gets final product.Y series motor egress line has 6 terminals.Be connected into angle (△) and can bear 380V voltage.Be connected into star (Y) and can bear √ 3*380V voltage, (seeing Fig. 2 for details).
Energy-saving effect after boosting, constant at former power, i.e. P=IV=I
2R's 3 times of √, line voltage distribution have raise, and then line current has been dwindled 3 times of √, because line loss is directly proportional with current squaring, so line loss only is 1/3 of former loss.
(2) transformer reconfiguration line makes the method that becomes the distribution circuit electric voltage upgrading.
(1) is that the line voltage distribution of 10 (6) KV power supply is constant to circuit, only changes the wiring of the transformer of 10 (6) KV/0.4KV.The transformer of 10 (6)/0.4KV generally all is that Y/Y continues, its structure form be low-voltage side coil interior, and high-tension coil is outside, helps changing pressure.High-tension coil is changed into △ by Y, promptly make △/Y splice into, so just can obtain the voltage of secondary side √ 3*380V, use the receiving voltage that changes Y for Y series motor into.(seeing Fig. 3 for details).
(2) be the 66/6K system for electric power system, again by the user of 6/0.4KV for Y series motor.Can be constant at the 66KV receiving voltage, its transformer connection can not changed middle transformer under the situation of the transformer insulated permission of next grade, just can obtain the voltage of √ 3*380V.The transformer of 66/6KV changes △/△ into for Y/ △ continues and continues, and then 6KV voltage just is upgraded to the 10KV level, like this through former transformation Y/Y continue become 10/ √ 3*0.4KV like this will be with the required voltage of realizing that Y series motor △ changes.(seeing Fig. 4 for details).
Claims (4)
1. the low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting, it is characterized in that: the motor egress line is connected into star (Y) type, can bears √ 3*380V voltage, simultaneously with transformer reconfiguration line, the output voltage that makes transformer is √ 3*380V.
2. the low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting according to claim 1, it is characterized in that: to circuit is that the line voltage distribution of 10 (6) KV power supply is constant, only change the wiring of the transformer of 10 (6) KV/0.4KV, change high-tension coil into Δ by Y, promptly make Δ/Y splice into.
3. the low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting according to claim 1, it is characterized in that: for electric power system is the 66/6K system, again by the user of 6/0.4KV power supply motivation, can be constant at the 66KV receiving voltage, its transformer connection is under the situation of the transformer insulated permission of next grade, transformer in the middle of can not changing changes the transformer of 66/6KV into Δ/Δ for the Y/ Δ continues and continues.
4. the low-voltage-powered voltage uprating method energy-conservation and the change distribution line of boosting according to claim 1, it is characterized in that: motor is a Y series motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910251300A CN101710788A (en) | 2009-12-03 | 2009-12-03 | Method for upgrading voltage of low-voltage power boost energy saving and power transformation and distribution circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910251300A CN101710788A (en) | 2009-12-03 | 2009-12-03 | Method for upgrading voltage of low-voltage power boost energy saving and power transformation and distribution circuit |
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| CN101710788A true CN101710788A (en) | 2010-05-19 |
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| CN200910251300A Pending CN101710788A (en) | 2009-12-03 | 2009-12-03 | Method for upgrading voltage of low-voltage power boost energy saving and power transformation and distribution circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723188A (en) * | 2012-07-04 | 2012-10-10 | 上海市电力公司 | Energy-saving transformation method for increasing capacity of S7 transformer of distribution network |
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2009
- 2009-12-03 CN CN200910251300A patent/CN101710788A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723188A (en) * | 2012-07-04 | 2012-10-10 | 上海市电力公司 | Energy-saving transformation method for increasing capacity of S7 transformer of distribution network |
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Application publication date: 20100519 |